#644F54
Closest named color: Brownish Purple (#76424E). oklch(45.1% 0.029 2.4), rgb(100, 79, 84).
Aa
White text reads best on this color (7.53:1).
About this color
#644F54 is a medium-dark close to neutral grey. In OKLCH its lightness is 45%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Brownish Purple (#76424E), ΔE 0.045 away. White text reads best on it, at 7.53:1.
| Hue family | Neutrals |
| Lightness | medium-dark (45%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #644F54 |
| RGB | rgb(100, 79, 84) |
| HSL | hsl(346, 12%, 35%) |
| OKLCH | oklch(45.1% 0.029 2.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #644F54 | 7.53:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #644F54 | 2.78:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #644F54 text on white | 7.53:1 | AAA | Lc 86.2 | Fine for body text |
| #644F54 text on black | 2.78:1 | Fails | Lc -15.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E9
oklch(93.5% 0.006 3.3)
-
Step 200
200
#DFD7D8
oklch(88.6% 0.009 8.6)
-
Step 300
300
#CBBCBF
oklch(80.9% 0.017 3.8)
-
Step 400
400
#B09A9F
oklch(70.7% 0.027 2.4)
-
Step 500
500
#9C8187
oklch(63% 0.034 3.2)
-
Step 600
600
#876A71
oklch(55.5% 0.038 2.3)
-
Step 700
700
#72595F
oklch(49.1% 0.034 2.4)
-
Step 800
800 (this color)
#644F54
oklch(45.1% 0.029 2.4)
-
Step 900
900
#4C3D40
oklch(37.7% 0.021 4.7)
-
Step 950
950
#2D2426
oklch(27.1% 0.014 3.1)
#644F54 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #525254 | 0.031 |
| Deuteranopia (no green cones) | #565654 | 0.030 |
| Tritanopia (no blue cones) | #684E51 | 0.008 |
| Achromatopsia (no color) | #545454 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644F54
#644F54
oklch(45.1% 0.029 2.4)
- #445B57
#445B57
oklch(45.1% 0.029 183.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #644F54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.045
- Dusty Grape #545775 ΔE 0.056
- Purple Brown #673A3F ΔE 0.058
- Dark Mauve #874C62 ΔE 0.069
- Slate #516572 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.072
- Dim Gray #696969 ΔE 0.076
- Dusk #4E5481 ΔE 0.077
Use #644F54 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.